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A step-up transformer is designed to have an output voltage of 2200V (rms) when the primary is connected across a 208 V (rms) source.
1. If there are 76 turns on the primary winding, how many turns are necessary on the secondary?
What is the maximum speed the masses
A 2.25×104 N elevator is to be accelerated upward by connecting it to a counterweight using alight (but strong!) cable passing over a solid uniform disk-shaped pulley, Determine how heavy should the counterweight be
a typical automobile under hard braking loses speed at a rate of about 6.4 ms2 the typical reaction time to engage the
Violet light and red light travel through air and strike a block of plastic at the same angle of incidence. compute the index of refraction for violet light in plastic
A 3000kg rocket and its 500 kg payload are traveling at a speed of 2000m/s. what is the velocity of the payload after separation
A circular coil enclosing an area of 200 cm2 is made of 210 turns of copper wire. The wire making up the coil has resistance of 3.0 ?, what is the average current in the coil during that time
A 663 kg elevator starts from rest it moves upward 2.7s with aconstant acceleration until it reaches its cruising speed of 1.63m/s, What is the power during an upward cruise with constant speed
Consider the mass spectrometer shown schematically in the figure below. The electric field between the plates of the velocity selector is 2100 V/m, Calculate the radius r of the path for a singly charged ion with mass m = 2.29 10-26 kg
When a grating is used with light that has a wavelength of 541 nm, a third-order maximum is formed at an angle of 30.0°. How many lines per centimeter does this grating have
Two rocks collide in outer space. Before the collision, one rock had mass 15 kg and velocity ‹ 4300, ?2700, 2350 › m/s. what is the velocity of the other rock
Electronics and inhabitants of the International Space Station generate a significant amount of thermal energy that the station must get rid of. How much power is radiated from each panel
Two pulse of light (red and blue) enter a huge block of glass at the same time. What is the index of refraction for the blue light in the glass
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